轮作
Rotation
Crop
Continuous
intercrop
crops
cropping
Rotations
crop rotation
continuous cropping
rotation of crops
sequence rotation system
convertible husbandry
Rotation system
rotation cultivation
rotary weeder
rotation pattern
rotation cropping
alternate cropping
change of crops
cropping rotation
wheat-maize rotation
intercropping
Wheat maize rotation
solarization
rotation patterns
wheat-summer corn rotation
草、粮、棉轮作
grass-grain-cotton rotation
轮作—连作
Rotation and continuous cropping
玉米-小麦轮作
Rotation of maize-winter wheat
Maize-wheat rotation system
Wheat-corn rotation
小麦—玉米轮作
Wheat maize rotation
winter wheat-maize rotation
蔬菜轮作
vegetable rotation system
vegetable rotation models
苜蓿—小麦轮作
alfalfa-wheat rotation system